Pick the appliances you want to keep running, set the hours, and kWh Lab calculates the capacity, inverter size, and the power stations that actually fit. No guesswork, no sales pitch.
Wattages are typical running draw. Adjust quantity and hours per outage — the readout updates instantly.
Affiliate links — kWh Lab may earn a commission. Picks are chosen by capacity fit, not payout. Replace the placeholder links with your affiliate URLs.
Add at least one appliance to see recommended units.
Each tool ranks for a real question people search before they spend. This is the template you replicate across the site.
How many watt-hours to run your gear through an outage.
Open tool ACTIVE →Per-hour and monthly electricity cost by wattage and local rate.
Open tool ACTIVE →Break-even years by system size, state rate, and incentives.
Open tool ACTIVE →Panels, system size, and roof space to offset your bill.
Open tool ACTIVE →Cost to charge your EV at home by model, rate, and miles.
Open tool ACTIVE →Fuel and maintenance savings of going electric.
Open tool ACTIVE →kWh↔BTU, watts/amps/volts, and kW↔horsepower.
Open tool TEMPLATEHow long a given power station runs your fridge or heater.
Build next TEMPLATESize a Powerwall-class system for essential circuits.
Build nextIf you own your roof, rooftop solar plus a home battery is the real bill-killer. Get matched with vetted local installers and compare quotes side by side — no obligation.
Highest-value action on the site · one qualified solar lead can outearn thousands of ad views.
Wire this to your lead-gen partner (EnergySage, Profitise, or an installer program). Placeholder only.
Programmatic, per-appliance and per-state pages. Fewer, genuinely useful pages beat thousands of thin ones.
